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 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
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package org.kie.kogito.codegen.tests;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.junit.jupiter.api.Test;
import org.kie.kogito.Application;
import org.kie.kogito.Model;
import org.kie.kogito.codegen.AbstractCodegenIT;
import org.kie.kogito.codegen.process.ProcessCodegenException;
import org.kie.kogito.process.Process;
import org.kie.kogito.process.ProcessInstance;
import org.kie.kogito.process.Processes;

import static org.assertj.core.api.Assertions.assertThat;
import static org.assertj.core.api.AssertionsForClassTypes.assertThatExceptionOfType;

public class ServiceTaskIT extends AbstractCodegenIT {

    @Test
    public void testBasicServiceProcessTask() throws Exception {

        Application app = generateCodeProcessesOnly("servicetask/ServiceProcess.bpmn2");
        assertThat(app).isNotNull();

        Process<? extends Model> p = app.get(Processes.class).processById("ServiceProcess");

        Model m = p.createModel();
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("s", "john");
        m.fromMap(parameters);

        ProcessInstance<?> processInstance = p.createInstance(m);
        processInstance.start();

        assertThat(processInstance.startDate()).isNotNull();
        assertThat(processInstance.status()).isEqualTo(ProcessInstance.STATE_COMPLETED);
        Model result = (Model) processInstance.variables();
        assertThat(result.toMap()).hasSize(1).containsKeys("s")
                .isNotNull().containsEntry("s", "Hello john!");
    }

    @Test
    public void testServiceProcessDifferentOperationsTask() throws Exception {

        Application app = generateCodeProcessesOnly("servicetask/ServiceProcessDifferentOperations.bpmn2");
        assertThat(app).isNotNull();

        Process<? extends Model> p = app.get(Processes.class).processById("ServiceProcessDifferentOperations");

        Model m = p.createModel();
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("s", "john");
        m.fromMap(parameters);

        ProcessInstance<?> processInstance = p.createInstance(m);
        processInstance.start();

        assertThat(processInstance.startDate()).isNotNull();
        assertThat(processInstance.status()).isEqualTo(ProcessInstance.STATE_COMPLETED);
        Model result = (Model) processInstance.variables();
        assertThat(result.toMap()).hasSize(1).containsKeys("s")
                .isNotNull().containsEntry("s", "Goodbye Hello john!!");
    }

    @Test
    public void testServiceProcessDifferentOperationsTaskFromAnotherNode() throws Exception {

        Application app = generateCodeProcessesOnly("servicetask/ServiceProcessDifferentOperations.bpmn2");
        assertThat(app).isNotNull();

        Process<? extends Model> p = app.get(Processes.class).processById("ServiceProcessDifferentOperations");

        Model m = p.createModel();
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("s", "john");
        m.fromMap(parameters);

        ProcessInstance<?> processInstance = p.createInstance(m);
        processInstance.startFrom("_A1EE8114-BF7B-4DAF-ABD7-62EEDCFAEFD4");

        assertThat(processInstance.startDate()).isNotNull();
        assertThat(processInstance.status()).isEqualTo(ProcessInstance.STATE_COMPLETED);
        Model result = (Model) processInstance.variables();
        assertThat(result.toMap()).hasSize(1).containsKeys("s")
                .isNotNull().containsEntry("s", "Goodbye john!");
    }

    @Test
    public void testServiceProcessSameOperationsTask() throws Exception {

        Application app = generateCodeProcessesOnly("servicetask/ServiceProcessSameOperations.bpmn2");
        assertThat(app).isNotNull();

        Process<? extends Model> p = app.get(Processes.class).processById("ServiceProcessSameOperations");

        Model m = p.createModel();
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("s", "john");
        m.fromMap(parameters);

        ProcessInstance<?> processInstance = p.createInstance(m);
        processInstance.start();

        assertThat(processInstance.status()).isEqualTo(ProcessInstance.STATE_COMPLETED);
        Model result = (Model) processInstance.variables();
        assertThat(result.toMap()).hasSize(1).containsKeys("s")
                .isNotNull().containsEntry("s", "Hello Hello john!!");
    }

    @Test
    public void testBasicServiceProcessTaskMultiinstance() throws Exception {

        Application app = generateCodeProcessesOnly("servicetask/ServiceProcessMI.bpmn2");
        assertThat(app).isNotNull();

        Process<? extends Model> p = app.get(Processes.class).processById("ServiceProcess");

        List<String> list = new ArrayList<String>();
        list.add("first");
        list.add("second");
        List<String> listOut = new ArrayList<String>();

        Model m = p.createModel();
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("list", list);
        parameters.put("listOut", listOut);
        m.fromMap(parameters);

        ProcessInstance<?> processInstance = p.createInstance(m);
        processInstance.start();

        assertThat(processInstance.status()).isEqualTo(ProcessInstance.STATE_COMPLETED);
        Model result = (Model) processInstance.variables();
        assertThat(result.toMap()).hasSize(3).containsKeys("list", "s", "listOut");
        assertThat((List<String>) result.toMap().get("listOut")).hasSize(2).contains("Hello first!", "Hello second!");
    }

    @Test
    public void malformedShouldThrowException() {
        assertThatExceptionOfType(ProcessCodegenException.class).isThrownBy(() -> {
            generateCodeProcessesOnly("servicetask/ServiceProcessMalformed.bpmn2");
        });
    }

    @Test
    public void shouldInferMethodSignatureFromClass() throws Exception {
        // should no throw
        assertThat(generateCodeProcessesOnly("servicetask/ServiceProcessInferMethod.bpmn2")).isNotNull();
    }

    @Test
    public void testMultiParamServiceProcessTask() throws Exception {

        Application app = generateCodeProcessesOnly("servicetask/MultiParamServiceProcess.bpmn2");
        assertThat(app).isNotNull();

        Process<? extends Model> p = app.get(Processes.class).processById("ServiceProcess");

        Model m = p.createModel();
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("s", "john");
        parameters.put("x", "doe");
        parameters.put("l", Collections.singletonList("pepe"));
        m.fromMap(parameters);

        ProcessInstance<?> processInstance = p.createInstance(m);
        processInstance.start();

        assertThat(processInstance.status()).isEqualTo(ProcessInstance.STATE_COMPLETED);
        Model result = (Model) processInstance.variables();
        assertThat(result.toMap()).hasSize(3).containsKeys("s", "x", "l")
                .isNotNull().containsEntry("s", "Hello (first and lastname) john doe!");
    }

    @Test
    public void testMultiParamConstantServiceProcessTask() throws Exception {

        Application app = generateCodeProcessesOnly("servicetask/MultiParamServiceProcessConstant.bpmn2");
        assertThat(app).isNotNull();

        Process<? extends Model> p = app.get(Processes.class).processById("ServiceProcess");

        Model m = p.createModel();
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("s", "john");
        parameters.put("x", "doe");
        m.fromMap(parameters);

        ProcessInstance<?> processInstance = p.createInstance(m);
        processInstance.start();

        assertThat(processInstance.status()).isEqualTo(ProcessInstance.STATE_COMPLETED);
        Model result = (Model) processInstance.variables();
        assertThat(result.toMap()).hasSize(2).containsKeys("s", "x")
                .isNotNull().containsEntry("s", "Hello (first and lastname) john Test!");
    }

    @Test
    public void testMultiParamServiceProcessTaskNoOutput() throws Exception {

        Application app = generateCodeProcessesOnly("servicetask/MultiParamServiceProcessNoOutput.bpmn2");
        assertThat(app).isNotNull();

        Process<? extends Model> p = app.get(Processes.class).processById("MultiParamServiceProcessNoOutput");

        Model m = p.createModel();
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("name", "john");
        parameters.put("age", 35);
        m.fromMap(parameters);

        ProcessInstance<?> processInstance = p.createInstance(m);
        processInstance.start();

        assertThat(processInstance.status()).isEqualTo(ProcessInstance.STATE_COMPLETED);
        Model result = (Model) processInstance.variables();
        assertThat(result.toMap()).hasSize(2).containsKeys("name", "age");

    }

    @Test
    public void testMultiParamServiceCustomResultProcessTask() throws Exception {

        Application app = generateCodeProcessesOnly("servicetask/MultiParamCustomResultServiceTask.bpmn2");
        assertThat(app).isNotNull();

        Process<? extends Model> p = app.get(Processes.class).processById("services");

        Model m = p.createModel();
        Map<String, Object> parameters = new HashMap<>();
        parameters.put("name", "john");
        parameters.put("age", 35);
        m.fromMap(parameters);

        ProcessInstance<?> processInstance = p.createInstance(m);
        processInstance.start();

        assertThat(processInstance.status()).isEqualTo(ProcessInstance.STATE_COMPLETED);
        Model result = (Model) processInstance.variables();
        assertThat(result.toMap()).hasSize(3).containsKeys("name", "age")
                .isNotNull().containsEntry("result", "Hello john 35!");
    }

    @Test
    public void testOverloadedService() throws Exception {

        Application app = generateCodeProcessesOnly("servicetask/ServiceProcessOverloaded.bpmn2");
        assertThat(app).isNotNull();

        Process<? extends Model> p = app.get(Processes.class).processById("ServiceProcessOverloaded");
        ProcessInstance<?> processInstance = p.createInstance(p.createModel());
        processInstance.start();

        assertThat(processInstance.status()).isEqualTo(ProcessInstance.STATE_COMPLETED);
    }
}
